Wave plate



FIG. 1 is a perspective view of the wave plate of the instant invention;

FIG. 2 is a right side plane view thereof;

FIG. 3 is a left side plane view thereof;

FIG. 4 is a top plane view thereof;

FIG. 5 is a bottom plane view thereof;

FIG. 6 is a front end view thereof; and,

FIG. 7 is a rear end view thereof. 

The ornamental design for a wave plate, as shown and described. 